ci(renovate): Re-enable dependency dashboard

The dependency dashboard is useful to validate that all expected
depencies are found as well as helping to debug issues with dependency
resolution.

renovate.json

@@ -3,7 +3,6 @@
   "extends": [
     "config:base",
     "docker:enableMajor",
-    ":disableDependencyDashboard",
     ":prHourlyLimitNone",
     "regexManagers:dockerfileVersions"
   ],